Question: when is the {start time} for {Wales} thathas {located in the administrative territorial entity} as {Kingdom of England} ?
Paraphrase: When is the {begin time} for {Grains} thathas {found within the authoritative regional substance} as {Kingdom of Britain} ?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q25 p:P131 ?s . ?s ps:P131 wd:Q179876 . ?s pq:P580 ?value}